morgan



Feb. 7, 1928.

Filed Oct. 4, 1926 2 Sheets-Sheet l ...wml y. inv/MVMZM DN M E vw .ii ww N a. MW m #E T MW T NN im A n Y Q \k\ @if QN Feb. 7, 1928. 1,658,411

G. W. MORGAN Foo'r OPERATED vIsE WITH MULTIPLIED LEVERAGE Filed 0012.4. 1926 2 Sheets-Sheet 2 'il 57 .73 I

Patented Feb. 7, i928.

1,558,411 rarer orties.

GLEN W. MOR-Grilli, F ALHAMBRA, CALIFORNIA, ASSIGNGR T0v BRWN TALVE S5 MANUFACTURING CGMFANY, OF ALHAMBRA, CALFORNIA, A CORPORATIOFT 0F- CALXFOR'NIA.

application filed Dctober 4, 1926. Serial No. 139,363.

My invention relates to bench vises and particularly to foot-operatedtypes of v lses in which the movable aw is gripped against the work bythe operation of a foot pedal.

It is an object of 'this invention to. provide a foot-operated vise'having a powerful grip. I

The ordinary foot-operated vise has only a single lever for causing the gripping of the movable jaw with the work. l/Vhen heavy action is to be done on the work, the grip obtained by use of this lever is insuflicient to hold the work. l have found that by using a secondary lever, having considerable leverage, for movingthe main lever so that a powerful grip is obtained on the work, a superior vise capable of heavy duty is provided.

Iltis accordingly an object of this inven tion to provide a foot-operated vise having a main lever for operating the movable aw so as to grip the work sufficiently to hold it in place, and a secondary lever for further operating said main lever so as to strongly grip the work. n

@ther objects and advantages of the in-V vention will be made evident hereinafter.k

Referring to the drawings which are for illustrative purposes only, :so Fig. 1 isa front elevation of a foot-oper ated vise embodying the features of my invention.

Fig. 2 is a view partially sectionedtaken substantially on the line 2 2 of Fig. 1.

Fig. 3 is anenlarged fragmentary view of the foot-operated mechanism, this view showing the position of the parts when the movable jaw is in a non-gripping position. Fig. 4 is a view similar to Fig. showing the parts in the positions they occupy when the movable jaw is in a gripping position. Fig. 5 is a section takenon the line 5-5 of Fig. 4.

Fig. 6 is a section taken on the line 6-6 of Fig. 4. l

Fig. 7 is a section taken on the line 7-7 of Fig. 2.

Fig. 8 is aV section taken on the linev 8-8 of Fig. 2. y

Referring particularly to Figs. l and 2, my invention provides a body 11 having a stationary jaw 12 formed at the forward part thereof. The body 11 is provided with side flanges 14 which are supported by a `bench 15, there being' suitable bolts 16 for securing the body in pla-oe. Extending rdownward from the forward part of the "the stationary jaw 12. The member 27 includes a bar portion 29 which is preferably rectangular in cross section as illustrated in Fig. 7, and which extends through a horizontal opening 3l formed in the body 11,.- this horizontal opening 31 also being rectangular in cross section. The extended end of the bar 29 is provided with a stop pm 32 which is adapted to engage the back end of the body 11 for preventing the movablev jaw member 27 from being removed from the body l1.

A pivot pin 34 is supported by the body 11 in a cavity 35 formed directly below the horizontal opening 31. Pivoted on the pivot pin 34 is a link 36. The opposite end of the link 36 is pivotally. attached lto a clevis member 38 by means of a pin39. Also pivoted to the clevis member 38 by vmeans of the pin 39 is a link 40. The link 40 is provided with a clevis 41 `which surrounds` the end of the link 36. The yother end of the link 40 is curved upward, as shown, and has a pin 43 vextended therethrough. The ends of the pin 43, as shown inl Figs. 2 and 7, extend into horizontal slots 44 formed in the body 1l on opposite sides of the cavity 35. This arrangement permits the right end of the link 40 to move only in a horizontal direction. The right end of the link 40 is provided in the form of a clevis 45 and supported by the pin 43. Between the arms of the clevis 45 is a weighted pawl 47. When the parts are in the position shown by full lines in Fig.v 2, the weighted pawl 47 en-y gages a stop 5,0 of the body 1l, thus holding the, pawl out of engagement with a rack 51y placed in a cavity 52, which cavity 52 is formed in the lower face of the bar 29.

Extending rearward from the projection l if) 17 is apair ot spaced lugs 55 which support a pin 56;' I Jivjoted on the pin 5G is a vinain operating arin 5'?. 'The lower end of the main operating arin 5T is provided in the t'orniot a main toot pedal 58 which extends through opening 59 formed in .the foot casting 22. The niain operating,` arin 5l' is resiliently retained in the position shown in full lines in Fig. 2 by ineans ot a coinpression spring ('50 which is compressed between a lug` G1 ot the main operating arm`5'l and the levied-e111?- ll-endine' frein the .main

opci ii'gjarni adjacent'to the pivot pin 5o 1e eh supporta pint on whioli 'anndjit entsc'rew 65 is vpivotallj,7 s tipport d. ''he adjustment" screw 65 is fede Uy SQQi-ued'tothe clevsmelnber .38: lhfi "Oreiitine" 21,1511'1" 57 is Capable (0f injthe' posit-ion liownuinffull lines"in'' "Fizgxv 'into 'the posi ion indicated llydotted linesi'?. lVhen" this nioveiinent takes `plaee,"the clevisineinher' 38 is niovjed upward s o as to n iovethe links 36 and l0 nearerftoalignment.' Since the lett'end ot the linkis 'liked and the rightendof'the notg'the right end ofthe link 40 inovesfina right-ward direction lflhen such a'nio'vein'eiit vtakes place thepawl l? is n 'ioved li.; ment with the stop 5.0 and will thus s wingintoengagement with the rack 5l.A After this engagement the inovable jaw nfeinherQT njiay'be inoved thereby in' a righton d' Orion. f

Bei Mellow inrtieulerly t Fe'S- t0 6 inclusive, the :toot casting '22 carries a ls'hoft'O'on which a'ielease leverll is pivoted,the release liever 71; having a lug 72 which Sprloiwds e .Central v'Bertolt the sliafti' The release^lever 71`ete`nd`s forwar'dly y:troni the sliaftt- 70 through the opening 5.9, and; torined at the rontpart thereotisa release pedalll v vliioh isotlsetas i ed in Fig 6, so thatit extends to lie releaseleven 7'1 which is'located inthe @nehme B9-isi nlevled with@ pair Oi' spaced wails` which vsupport a pin il bfyithern 76 between the Walls 75 'pinion 77;" :Formed fon thelower' part ot `'the"niain operatingVH edal"58 ris an ark" 78. Vrllhje"arcuat'ed rack "(8 is "fined on 'a line generated around thecen- 56 on which'tlie inain operatinofarin Tisv pivoted "Thelower 4part oli thetootcasting' 22 provides af cavity79finwhich a spring," 80 is ,@Oiliessfl "Theories S0 engages d bularice y"plate 81 wlnoh "is toi-ced against a Vthe opening 59 are lugs 103 which snpport *the in ain operating arin .5C/fis in the position 'indicated by 'dotted lines 67 in lliggQ and as'sliown in 4. The release lever "d "ot tliefinain p edal}5 8.` 'that por- Leaeii isengag'ed with a tooth oit the pinion, the

4dogA S5' will he in an intermediate position and viaje versa.

" the"parts ot'tliedeviceare in the owjii in Figs. l and the movable 27 in ay he finoie'chin V'nl itlfoiit work in the devico5 vthe inovahle jaw in 'e'inber 2l is pulled outward'so that the work maybe placed between the stationary lnd inovahleljaws 12' l 2S. Theil in f is then ,ino've'd inward unt jaws contact the work. Zl`he'operatorforoes downward i the iiiain 'o peratingfpedal 5B,

` it troni the/position' .nes in big. 2 into'the dotted. line position o1; or into the position shown. in Fige; 'lhis Vcauses the movable jaw Ineinher 527V to nieve in a' -rightward diiec'tioiiand causes the work to he gripped sutiioientlv` to hold it so 'that it will notfall in place. .This grip, however, not strong enougliftoisupport tnowolk it eny strenuoiis action isfto he done thereon.

rEhe iimportant part ont' in y rinvention will new hedescribed. Piv'ote'd on 'the shaft 76 on opposite sides oi the pinion 'Z7 lont inside the walls'ar yoke farins and. 91.`l rlhe forward 'ends ojt `the volge arg-instill) and 91 are atttcliedfi'ogether 'oy cross "oar which extendsac oss the forward lower endtliereot Carri-et. y the forward ends ot" the 'arins QOfand 'ill Ais a'pivot pin 93 on which' an operatingijlog 'e iS Placed, the Operating; dos' Jil-.being @ai d to iesili'ently engage theteethof the pinion 7T by jesuitelleleef`sp1 The" viol-,1 construction comprising tltr `jyjoke carnes Q1), and 01 :ind thecro s .bar 92 isheldlin the QO'StQDfshOii/fn inlig- 37031, means Of .a Coil spring''l" which is"co1npres ed v'hetWeen la projection 98 the lfelese'leverfl 'and a projection 99 which is 'eitended `iifoin the yoke arni 91. -lhe `projg-i'ction 9 9 provides a shoulder 100 which engages an upper ytace of one of vthe walls 75. ot thereleaselever 7 1 tor determining the lowest swung position of the yoke construction. i

Extended forwardly on opposite sides. ot

lllhen itis desired to [support kif) CII

91 and the cross bar 92.' After the main operating arm 57 has been moved into the position shown in Fig. Ll, by forcing downward upon the main pedal 58, the secondary lever 105 is operated bythe loot which engages the pedal 106. The secondary lever 105 is forced downward from the position shown in Fig. 3 into the position shown in Fig. Il. This moves the arm. 103 upwardv :from-the position shown in Fie. 3 into the position shown in Fig. 4. The yoke construction is at this time moved from the position shown in Fig.A 3 into the position shown in Fig. l against the action ot the spring 97. By reason ot the fact that the operating dog 94 is engaged with the pinion 77, the pinion will be rotated. The pinion, since it is in engagement with the rack 78, moves the operating arm farther in a rearward direction as indicated by dotted lines 108 in Fig. 4. This forces the dog L17 which engages the rack 51 ot' the movable jaw member 27 rearward a slight distance, which causes the stationary and movable jaws 12 and 28 to powerfully grip the work.

The yoke construction and secondary lever are returned to the position of Fig. 3 by the spring 97. y

It is possible to obtain a very powerful grip by reason of the fact that the leverage obtained through the use of the secondary lever 105 isvery great. The leverage of the lever 105 and the arm 103 is about five to one and the leverage ot' the yoke and the pinion 77 is about two to one. This is a much greater leverage than is obtained through the use of the pedal 58. The leverage obtained when using the secondary lever 105 is the leverage ot' the main operating arm multiplied by the leverage oit the secondary lever 105 and the parts which conneet it to the rackV 78. When the work is to be released the release pedal 73 is depressed. The release lever 71 is moved downward from the position shown in the drawings against the action of the spring 8O so that the pinion 77 is removed from engagement with the rack 78. The coil spring associated with the main lever 57 at this time returns the main leverto the full line position shown in Fig. 2 and in Fig. 3. The other parts of the vise are returned to corresponding position as shown in Fig. 2. The movable jaw member 27 is then entirely released and may be manually moved from contact with thework, the work thenbeing easily removed.

As point-ed out in the statement of invention, the important object of this invention is to provide a Yfoot-operated vise which has a powerful grip. This object is accomplished by the use ol the secondary lever 105 and the yoke assembly which rotates the pinion 77. These parts which are so iining said movable jaw towards said stationy ary j aw so asto grip the work; a main operating lever for operating saidmechanism;

and secondary mechanism lor further actuat-` ing said main. operating lever so that said movable jaw may be moved to rigidly grip said work.

In a toot-operated vise, the combination of: a body having a stationary jaw', a movable aw member having a movable jaw adapted to cooperate with said'stationary jaw for gripping work, mechanism for moving said movable jaw towards said stationary jaw so as to grip the work; a main operating lever for operating said mechanisn'i; a rack carried by said main operating lever; a secondary lever; means operated by said secondary lever; and a pinion engaging said rack, said pinion being operated by said means tor lurther actuating said main operl ating lever so that said movable jaw may be moved to rigidly grip said work. r

3.' A combination as delined in claim 2 in which said means comprises: a pivot yoke swung by said operating lever; and an operating dog carried by said pivoted yoke, said operating dog engaging and rotating said pinion.

4. ln a toot-operated vise, the combination of: a body having a stationary jaw; a. movable jaw member having a movable jaw adapted to cooperate with said stationary jaw for gripping work; mechanism for moving said movable jaw towards said stationary jaw so as to grip the work; a main operating lever for operating said mechanism; secondary mechanism for further actuating said main operating lever so that said movable jaw may be moved to rigidly grip said work; and release means tor disengaging said secondary mechanism from said main operating lever so that said movable jaw is released vfrom gripping engagement with the work.

ln a toot-operated vise, the combination of: a body having a stationary jaw; a movable jaw member having a movable aw adapted to cooperate with said stationary jaw for gripping work; mechanism or moving said movable jaw towards said stationary jaw so to grip the work; a main operating lever ttor operating said mechanism; a rack carried by said main operating lever; a secondary lever; means operated by said secondary lever, a pinion engaging said rack,

, ef ,e belely bevieg e e 1111119.11 lee-ieg epeeeed by Seid $30.1' '1f11111e1 eeueeg Seid 1.1111111. epereteg leYer- Se the@ Seid. 111evelele jew wey beweved to rigidly grip Said Work;"and release m1 "201' disengaging sziigl pinion from sgiid rack :Q tliipt sgml 11i-lm Op lever may uiQve in such u li'igiiuiei-tli-i mid ingy'ible jigw will be releeeed 1;'1'12111. gripping e1i1gege111erewvitl1. the ef0111le11ee11 @Mieli in @1.1111115 1.11 5111911 Seid *rele ,1e 1.1.1e11r1e eeesie-Sef ,4 ref levlhser leve1 :ind iii Whipli @nl pinippiacgirei' feeeee-levef 7 1,11 e feetfepeeledlwp, the,ee111b111et1e11 i 19114131 jew; e meveble je 111e11111ge1' 11eme; 21 .meV-eme new udand to cooperate with Said Siga ioiiaiy im 119,111@ 1101.111 ;.-,11;1ee1111111e.111 .ferme \1- igigsaid-movaglile jim @Qmfgudsfsgil spjlitigni e ie grip-@he We '1.1; e 115111111 e1' @Deleting seid leeeheeem; :L ifackzujijid Said ii'ixxin Qpemtiiig lever; e 'iryl z11'1ee11eepeleeedby #leid See dffy lever; eed e wel; eegee'er engagpgeeid leek, Seid mele engager beine' Operated by s il I Yneiisfl'gi' fiiijtliei' actuating s :iid

GLEN W. MOR AN. 

